Hello!! I need help please! Please explain how I can identify a percipitate in a reaction! I need help with chemistry ha
1 answer:
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Answer:
Compound B has greater molar mass.
Explanation:
The depression in freezing point is given by ;
..[1]
Where:
i = van't Hoff factor
= Molal depression constant
m = molality of the solution
According to question , solution with 5.00 g of A in 100.0 grams of water froze at at lower temperature than solution with 5.00 g of B in 100.0 grams of water.
The depression in freezing point of solution with A solute:
Molar mass of A =
The depression in freezing point of solution with B solute:
Molar mass of B =
As we can see in [1] , that depression in freezing point is inversely related to molar mass of the solute.
This means compound B has greater molar mass than compound A,
Answer : The value of reaction quotient, Q is 0.0625.
Solution : Given,
Concentration of = 2.00 M
Concentration of = 2.00 M
Concentration of = 1.00 M
Reaction quotient : It is defined as a concentration of a chemical species involved in the chemical reaction.
The balanced equilibrium reaction is,
The expression of reaction quotient for this reaction is,
Now put all the given values in this expression, we get
Therefore, the value of reaction quotient, Q is 0.0625.